Constraints on the neutrino extension of the Standard Model and baryon asymmetry of the Universe
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| Main Authors: | , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866909488532946944 |
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| author | Gorkavenko, Volodymyr Khasai, Oleksandr Ruchayskiy, Oleg Tsarenkova, Mariia |
| author_facet | Gorkavenko, Volodymyr Khasai, Oleksandr Ruchayskiy, Oleg Tsarenkova, Mariia |
| contents | Heavy neutral leptons (HNLs) can cause new effective interactions of Standard Model particles, particularly charged lepton flavour violation (cLFV) processes. The non-observation of cLFV processes, therefore, puts constraints on the parameters of the HNLs. We find the relations between the cLFV effective operators in the realistic case when active neutrino masses are non-zero and masses of the HNLs are non-degenerate. This allows us to strengthen the existing cLFV constraints. We also link the baryon asymmetry of the Universe to the same cLFV effective operators, which imposes new restrictions on their values. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_07988 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Constraints on the neutrino extension of the Standard Model and baryon asymmetry of the Universe Gorkavenko, Volodymyr Khasai, Oleksandr Ruchayskiy, Oleg Tsarenkova, Mariia High Energy Physics - Phenomenology High Energy Physics - Experiment Heavy neutral leptons (HNLs) can cause new effective interactions of Standard Model particles, particularly charged lepton flavour violation (cLFV) processes. The non-observation of cLFV processes, therefore, puts constraints on the parameters of the HNLs. We find the relations between the cLFV effective operators in the realistic case when active neutrino masses are non-zero and masses of the HNLs are non-degenerate. This allows us to strengthen the existing cLFV constraints. We also link the baryon asymmetry of the Universe to the same cLFV effective operators, which imposes new restrictions on their values. |
| title | Constraints on the neutrino extension of the Standard Model and baryon asymmetry of the Universe |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2502.07988 |